100021200002221 has 32 divisors (see below), whose sum is σ = 101110481746560. Its totient is φ = 98939958534144.

The previous prime is 100021200002179. The next prime is 100021200002237. The reversal of 100021200002221 is 122200002120001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100021200002221 - 2¹⁹ = 100021199477933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021200002291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57057158281 + ... + 57057160033.

It is an arithmetic number, because the mean of its divisors is an integer number (3159702554580).

Almost surely, 2^{100021200002221} is an apocalyptic number.

It is an amenable number.

100021200002221 is a deficient number, since it is larger than the sum of its proper divisors (1089281744339).

100021200002221 is a wasteful number, since it uses less digits than its factorization.

100021200002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100021200002221 its reverse (122200002120001), we get a palindrome (222221202122222).

The spelling of 100021200002221 in words is "one hundred trillion, twenty-one billion, two hundred million, two thousand, two hundred twenty-one".